Liquid mixing apparatus



Sept. 27, 1938.

E. s. PRINCE 1 2,131,190

I LIQUID MIXING APPARATUS I Filed July 27, 1937 M mm Patented Sept. 27, 1938 UNITED STATES- PATENT oerce 1 2 Claims.

size by means of an electrically driven agitating device. Following the mixing operation the contents of the container are poured into another receptacle for serving. In this operation a portion of the mixture adheres to the walls of the container, with a consequent waste thereof. The

use of the large .account of the whipping action of the mixing device, which results inan overflow of the con- 'tents in a container of suitable sizefor serving the drink after it is mixed, and to catch the portion of the drink adhering to the mixing device, which is thrown outwardly by the centrifugal 'action of the agitator, which is automatically self-cleaning.

The present invention simplifies the operation of mixing the drinks, makes it possible to mix and serve the drink in the same receptacle, and eliminatesthe loss occasioned by pouring from one receptacle into another.

The invention consists primarily of a metal ring provided with a slightly flaring skirt portion, into which the upper part of a receptacle, such as a mixing cup, can be inserted, such ring forming an extension for the cu and making it possible to use a smaller cup or glass. This extension also provides a shield for the upper part of the cup, preventing the contents thereof from overflowing or splashing outwardly from the container. A close frictional connection is formed between the cup and the shield during the mixing operation. The

flaring skirt also forms a shield which catches that part of the drink adhering to the dasher, and which is thrown off by centrifugal force.

Another feature of the invention consists in 5 making use of the extension or ring member to close an electric circuit and start the operation of the machine. This is caused by reason of the extension being forced upwardly by the cup in positioning the same therein, means also being 5 provided for holding the cup and ring in elevated position while the mixing is being done. This is accomplished by the engagement of the extension, or a connection thereon-with a yieldable switch member, which also assistsin holding the parts in locked position. 'l'hqarmligement containers is necessitated on machine.

is such that the motor is started ,at a critical time, with the apparatus and its contents ready for the mixing operation. Similarly, the power is shut off at a critical moment, with the initial operation of removing the mixing cup and its I contents from the machine.

The extension part of the container is' sufliciently weighted to cause the same to move downwardly by force of gravity, and follow the cup downwardly as it is being removed. The upper 10 part of the cup is also kept clean at all times by the enclosing shield, and the ring or shield can be readily removed for cleaning the parts.

The above named, and other features and advantages of the invention will more fully appear 15 from the following specification, reference being had to the accompanying drawing, showing a single figure, which is a side elevation of. a machine embodying the invention.

The main part of the machine is of standard 20 construction, and includes abase 5, a hollow standard 6, and an electric motor I, supported at the upper partof the standard. The motor shaft 8 carries the usual dashers oragitators 9, for operation in a container supported in the as Supported from the inner face of the standard 6 isa circular member or ring ill, by means of a plate H connected with said ring, and slidable vertically on a plate l2 fixed to the standard. so

- The plate II is provided with a thumb-screw l3 having a threaded engagement therewith, and

movable in a slot M in the plate l2. v

Projected downwardly from the ring- III is a skirt portion It, provided with a shoulder ll 5 [at the point of junction with said ring. The

skirt 16 also flares downwardly andoutwardly, so. as to form a close frictional contact with containers of difiering diameters. If' desired, a gasket of rubber or other material can be inserted 40 against the shoulder H, to prevent any leak between the ring and a cup connected therewith. A cup I8 is shown positioned in the extension, and held in place by afcatch l9 fixed to the standard 6. In positioning the cup l8 in the holder it moves such holder or extension upwardly, bringing the end 15 of the screw l3 into contact with a switch-pin 20, moving said pin sufficiently to close a switch in the standard 5, and, w cause the operation of the motor 'I.- The movement of the switch-pin is against the force of a. coiled spring indicated at 2!, which spring tends to return thespin 20 downwardly when released, and also assists in holdingthe-cup and holder in u that as soon as the ingredients are in place in the close engagement, and with the lower edge of the cup forced against the catch l9.

Following the mixing operation, the lower edge of the cup is released, and the cup moved downwardly, with the part III engaged therewith, until What I claim, and desire to secure, is: 1. The combination of a standard, an electric clinging thereto. During the operation there is little tendency of the contents of the cup working I upwardly above the same, but if it does it is prevented from escapingby the shield l0, and settles down into the cup as soon as the movement of the motor is interrupted. i

It will be noted that the parts l0 and I6 form what having to m1x them first in a large container, ard, amotor supported thereby andprovided with such as are in common use. It will also be noted cup, and the cup in place in the machine, the

with, and movable by the contact of the container therewith to operate said starting switch.

EARL S. PRINCE.

construction can be used. 

